CN104952410B - The display ameliorative way and its equipment of liquid crystal panel - Google Patents
The display ameliorative way and its equipment of liquid crystal panel Download PDFInfo
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- 238000006243 chemical reaction Methods 0.000 description 2
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
- G09G3/36—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals
- G09G3/3607—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals for displaying colours or for displaying grey scales with a specific pixel layout, e.g. using sub-pixels
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2300/00—Aspects of the constitution of display devices
- G09G2300/04—Structural and physical details of display devices
- G09G2300/0439—Pixel structures
- G09G2300/0443—Pixel structures with several sub-pixels for the same colour in a pixel, not specifically used to display gradations
- G09G2300/0447—Pixel structures with several sub-pixels for the same colour in a pixel, not specifically used to display gradations for multi-domain technique to improve the viewing angle in a liquid crystal display, such as multi-vertical alignment [MVA]
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2320/00—Control of display operating conditions
- G09G2320/02—Improving the quality of display appearance
- G09G2320/0233—Improving the luminance or brightness uniformity across the screen
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2320/00—Control of display operating conditions
- G09G2320/02—Improving the quality of display appearance
- G09G2320/0247—Flicker reduction other than flicker reduction circuits used for single beam cathode-ray tubes
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2320/00—Control of display operating conditions
- G09G2320/02—Improving the quality of display appearance
- G09G2320/028—Improving the quality of display appearance by changing the viewing angle properties, e.g. widening the viewing angle, adapting the viewing angle to the view direction
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2320/00—Control of display operating conditions
- G09G2320/06—Adjustment of display parameters
- G09G2320/0673—Adjustment of display parameters for control of gamma adjustment, e.g. selecting another gamma curve
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2360/00—Aspects of the architecture of display systems
- G09G2360/16—Calculation or use of calculated indices related to luminance levels in display data
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- Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
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- Theoretical Computer Science (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
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- Liquid Crystal Display Device Control (AREA)
Abstract
The display ameliorative way and its equipment of a kind of liquid crystal panel are provided.Methods described includes：For at least one color sub-pixel in a variety of color sub-pixels, the gamma curve in the case of stravismus is obtained；According to the tangent slope for the point for corresponding to each grey decision-making on the gamma curve of acquisition, determine the brightness enhancing starting point on the gamma curve, wherein, the grey decision-making of the brightness enhancing starting point is j, also, the tangent slope of the brightness enhancing starting point is less than the tangent slope that grey decision-making on the gamma curve is respectively the point of (j 1) and (j+1)；Increase grey decision-making on the gamma curve and be more than or equal to the brightness value that the brightness strengthens the grey decision-making of starting point and is less than the point of maximum gray value.According to methods described and its equipment, the problem of there is colour cast when side is seen or looks side ways liquid crystal panel can be effectively improved.
Description
Technical field
All things considered of the present invention is related to LCD Technology field, more particularly, is related to a kind of the aobvious of liquid crystal panel
Showing the display of ameliorative way and a kind of liquid crystal panel improves equipment.
Background technology
In recent years, liquid crystal display (LCD) with its small volume, lightweight, display quality is high the advantages of gradually instead of with
Past cathode-ray picture tube (CRT) display.With the continuous application of liquid crystal display, visual angle of the user to liquid crystal display
Requirement also gradually step up, thus, visible angle is have developed than larger wide-angle liquid crystal display, for example, VA types LCD
Deng.
《Ultra high-definition shows authentication techniques specification》It is visual that CNCA/CTS 0019-2013 CESI specifications propose 9 colourities
The standard at angle, colourity angle of visibility is the horizontal viewable angle when the aberration of screen center is 0.02.Due to being seen at present in side or tiltedly
Also there are problems that during depending on wide-angle liquid crystal display, so as to cause colourity angle of visibility too small, it is impossible to meet user to liquid
The demand at the larger visual angle of crystal display.
Particularly, Fig. 1 shows bent in the gamma of the color sub-pixels obtained in the case of facing and in the case of stravismus respectively
Line.As shown in figure 1, (being in 60 ° of view liquid crystal panel i.e. with the vertical direction of liquid crystal panel) obtains in the case of stravismus
Each color sub-pixels (red sub-pixel, green sub-pixels, blue subpixels, white sub-pixels) gamma curve exist it is obvious
Gray-scale inversion phenomenon, with being obtained in the case of facing (to be in 0 ° of view liquid crystal panel with the vertical direction of liquid crystal panel)
The gamma curve gap of each color sub-pixels taken is larger, i.e., aberration is larger, so as to cause angle of visibility too small.
Fig. 2 shows the gamma curve of the color sub-pixels obtained in the case of stravismus after BH/BL is converted.BH/BL
Conversion is i.e. on liquid crystal panel, and whole blue subpixels are divided into the blue subpixels pair being made up of two blue subpixels,
Also, the first blue subpixels of each blue subpixels centering are provided higher gray scale value, each blue subpixels centering
Second blue subpixels are provided relatively low grey decision-making.As shown in Fig. 2 being obtained in the case of stravismus after BH/BL is converted
The gray-scale inversion phenomenon of the gamma curve of color sub-pixels (red sub-pixel, green sub-pixels, blue subpixels) is obtained significantly
Mitigate, but limited because DATA REASONING error, circuit signal control limitation, the brightness flicker for preventing space etc. are actual, i.e.,
Make to still suffer from gray-scale inversion phenomenon by BH/BL conversion, it is impossible to reach the gal of the color sub-pixels with obtaining in the case of facing
Horse curve overlaps or gap is smaller.Therefore, aberration is still suffered from, it is impossible to meet demand of the user to larger angle of visibility.
The content of the invention
The exemplary embodiment of the present invention is the display ameliorative way and its equipment for providing a kind of liquid crystal panel, to overcome
The problem of there is colour cast when side is seen or looks side ways liquid crystal panel.
According to the exemplary embodiment of the present invention there is provided a kind of display ameliorative way of liquid crystal panel, wherein, the liquid crystal
Each pixel on panel includes a variety of color sub-pixels, it is characterised in that methods described includes：For a variety of colored sons
At least one color sub-pixel in pixel, obtains the gamma curve in the case of stravismus；According to right on the gamma curve of acquisition
The brightness enhancing starting point on the gamma curve should be determined in the tangent slope of the point of each grey decision-making, wherein, the brightness enhancing
The grey decision-making of starting point be j, also, the brightness enhancing starting point tangent slope be less than the gamma curve on grey decision-making be respectively
(j-1) and (j+1) point tangent slope；Increase grey decision-making on the gamma curve and be more than or equal to brightness enhancing starting point
Grey decision-making and less than maximum gray value point brightness value.
Alternatively, in the step of increasing brightness value, if the former brightness value for the point that grey decision-making is k is on the gamma curve
Lv (k), obtained by following computing the new brightness value L v (k) of the point ', wherein, k is the integer more than or equal to j and less than m, m
For maximum gray value：
Lv (k) '=f*Lv (k),
Wherein, f ∈ (1, Lv (m)/Lv (k)], Lv (m) is the former brightness value of the point that grey decision-making is m on the gamma curve.
Alternatively, in the step of increasing brightness value, if the former brightness value for the point that grey decision-making is k is on the gamma curve
Lv (k), obtained by following computing the new brightness value L v (k) of the point ', wherein, k is the integer more than or equal to j and less than m, m
For maximum gray value：
Lv (k) '=(k/m)(m*γ/k)* Lv (m),
Wherein, Lv (m) is the former brightness value of the point that grey decision-making is m on the gamma curve, and γ is predetermined gamma value.
Alternatively, in the step of increasing brightness value, if the former brightness value for the point that grey decision-making is k is on the gamma curve
Lv (k), obtained by following computing the new brightness value L v (k) of the point ', wherein, k is the integer more than or equal to j and less than m, m
For maximum gray value：
Lv (k) '=(k/m)gamma(k)′* Lv (m),
Wherein, Lv (m) is the former brightness value of the point that grey decision-making is m on the gamma curve, and gamma (k) ' is that grey decision-making is
K, brightness value are the gamma value of Lv (k) ' point, and gamma (k) ' meets following condition：Gamma (k) ' ＜ gamma (k) and make Lv
(k) '≤Lv (m), wherein, gamma (k) is the gamma value of the point that grey decision-making is k on the gamma curve, gamma (k)=lg
(Lv(k)/Lv(m))/lg(k/m)。
Alternatively, γ is the value less than 2.2.
Improve equipment there is provided a kind of display of liquid crystal panel in accordance with an alternative illustrative embodiment of the present invention, wherein, it is described
Each pixel on liquid crystal panel includes a variety of color sub-pixels, it is characterised in that the equipment includes：Gamma curve obtains single
Member, at least one color sub-pixel in a variety of color sub-pixels, obtains the gamma curve in the case of stravismus；It is bright
Degree enhancing starting point determining unit, according to the tangent slope for the point for corresponding to each grey decision-making on the gamma curve of acquisition, it is determined that described
Brightness enhancing starting point on gamma curve, wherein, the brightness strengthens the grey decision-making of starting point for j, also, the brightness strengthens
The tangent slope of point is less than the tangent slope that grey decision-making on the gamma curve is respectively the point of (j-1) and (j+1)；Brightness value increases
Big unit, increases grey decision-making on the gamma curve and is more than or equal to the grey decision-making of brightness enhancing starting point and less than maximum gray
The brightness value of the point of value.
Alternatively, if the former brightness value for the point that grey decision-making is k is Lv (k), brightness value increase unit on the gamma curve
Obtained by following computing the new brightness value L v (k) of the point ', wherein, k is the integer more than or equal to j and less than m, and m is maximum
Grey decision-making：
Lv (k) '=f*Lv (k),
Wherein, f ∈ (1, Lv (m)/Lv (k)], Lv (m) is the former brightness value of the point that grey decision-making is m on the gamma curve.
Alternatively, if the former brightness value for the point that grey decision-making is k is Lv (k), brightness value increase unit on the gamma curve
Obtained by following computing the new brightness value L v (k) of the point ', wherein, k is the integer more than or equal to j and less than m, and m is maximum
Grey decision-making：
Lv (k) '=(k/m)(m*γ/k)* Lv (m),
Wherein, Lv (m) is the former brightness value of the point that grey decision-making is m on the gamma curve, and γ is predetermined gamma value.
Alternatively, if the former brightness value for the point that grey decision-making is k is Lv (k), brightness value increase unit on the gamma curve
Obtained by following computing the new brightness value L v (k) of the point ', wherein, k is the integer more than or equal to j and less than m, and m is maximum
Grey decision-making：
Lv (k) '=(k/m)gamma(k)′* Lv (m),
Wherein, Lv (m) is the former brightness value of the point that grey decision-making is m on the gamma curve, and gamma (k) ' is that grey decision-making is
K, brightness value are the gamma value of Lv (k) ' point, and gamma (k) ' meets following condition：Gamma (k) ' ＜ gamma (k) and make Lv
(k) '≤Lv (m), wherein, gamma (k) is the gamma value of the point that grey decision-making is k on the gamma curve, gamma (k)=lg
(Lv(k)/Lv(m))/lg(k/m)。
Alternatively, γ is the value less than 2.2.
In the display ameliorative way and its equipment of liquid crystal panel according to an exemplary embodiment of the present invention, by increasing to
The problems such as a kind of few brightness of color sub-pixels in high gray is to improve the colour cast existed when side is seen or looks side ways liquid crystal panel,
So as to effectively increase angle of visibility, demand of the user to the larger visual angle of liquid crystal display is met.
By in terms of partly illustrating that present general inventive concept is other in following description and/or advantage, also one
Divide and will be apparent by description, or can be learnt by the implementation of present general inventive concept.
Brief description of the drawings
Fig. 1 shows gamma curve respectively in the color sub-pixels obtained in the case of facing and in the case of stravismus；
Fig. 2 shows the gamma curve of the color sub-pixels obtained in the case of stravismus after BH/BL is converted；
Fig. 3 shows the flow chart of the display ameliorative way of liquid crystal panel according to an exemplary embodiment of the present invention；
Fig. 4 shows that the display of liquid crystal panel according to an exemplary embodiment of the present invention improves the block diagram of equipment.
Embodiment
Embodiments of the invention are reference will now be made in detail, the example of the embodiment is shown in the drawings, wherein, identical mark
Number identical part is referred to all the time.The embodiment will be illustrated by referring to accompanying drawing below, to explain the present invention.
Hereinafter, the display ameliorative way of liquid crystal panel according to an exemplary embodiment of the present invention is described by Fig. 3 is combined.Institute
The method of stating can be completed by liquid crystal display, can also be realized by computer program, so that when running the program, in realization
State method.
Fig. 3 shows the flow chart of the display ameliorative way of liquid crystal panel according to an exemplary embodiment of the present invention.The liquid
Each pixel in crystal panel includes a variety of color sub-pixels.If for example, the liquid crystal panel is RGB liquid crystal panels, institute
The each pixel stated on liquid crystal panel includes red sub-pixel, green sub-pixels and blue subpixels.If the liquid crystal panel
It is RGBW liquid crystal panels, then each pixel on the liquid crystal panel includes red sub-pixel, green sub-pixels, blue subpixels
And white sub-pixels.If the liquid crystal panel is RGBY liquid crystal panels, each pixel on the liquid crystal panel includes red
Sub-pixels, green sub-pixels, blue subpixels and yellow sub-pixel.
Reference picture 3, in step S10, at least one color sub-pixel in a variety of color sub-pixels, is obtained
Gamma curve in the case of stravismus.
Here, the stravismus situation can be with the vertical direction of liquid crystal panel be in predetermined angular view liquid crystal surface
Plate.The predetermined angular can be unspecified angle in 30 ° to 80 °.It should be understood that the predetermined angular and required liquid crystal panel
Angle of visibility is relevant, and the angle of visibility of required liquid crystal panel is bigger, and the predetermined angular should be bigger.
As an example, can be obtained according to the brightness value when measuring obtained color sub-pixel in the case of stravismus in each GTG
Take the color sub-pixel on grey decision-making and the gamma curve of brightness value.It should be understood that can also obtain by other means
The gamma curve of color sub-pixel in the case of stravismus.
In step S20, according to the tangent slope for the point for corresponding to each grey decision-making on the gamma curve of acquisition, the gal is determined
Brightness enhancing starting point on horse curve, wherein, the grey decision-making of the brightness enhancing starting point is j, and the brightness strengthens cutting for starting point
Line slope is less than the tangent slope that grey decision-making on the gamma curve is respectively the point of (j-1) and (j+1).
In other words, increase if over grey decision-making, the tangent slope of the point on the gamma curve from large to small after again by
It is small to become big, then tangent slope can be become big point by small and be defined as the brightness enhancing starting point.
In step S30, increase grey decision-making on the gamma curve be more than or equal to the brightness strengthen starting point grey decision-making and
Less than the brightness value of the point of maximum gray value.
In other words, in addition to the maximum point of grey decision-making on the gamma curve, grey decision-making on the gamma curve is more than
Institute equal to j a little carries out brightness enhancing operation, so that the gray-scale inversion phenomenon of the gamma curve is mitigated or eliminated, so that
The gamma curve is overlapped as far as possible with the gamma curve in the case of facing or gap is smaller, to eliminate in the case of stravismus
The phenomenons such as the colour cast of presence.
It should be understood that can increase grey decision-making on the gamma curve by various modes strengthens more than or equal to the brightness
The grey decision-making of starting point and less than maximum gray value point brightness value.The original of grey decision-making on the gamma curve as k point can be set
Brightness value is Lv (k), and it is Lv (k) ' to increase the new brightness value that the brightness value of the point obtained, wherein, k is more than or equal to j and small
In m integer, m is maximum gray value, and Lv (m) is the former brightness value of the point that grey decision-making is m on the gamma curve.Also, should
Note, new brightness value L v (k) ' Lv (m) is not to be exceeded.
Here, the grey exponent number of pixel is with the different and different of liquid crystal panel, for example, when liquid crystal panel is 8 bit liquid crystal surfaces
During plate, grey exponent number is 256, and GTG can be represented sequentially as 0,1,2 ..., 255.Now, minimum gray value is 0, maximum gray value m
For 255.For example, when liquid crystal panel is 10 bit liquid crystal panel, grey exponent number is 1024, and GTG can be represented sequentially as 0,1,
2……,1023.Now, minimum gray value is 0, and maximum gray value m is 1023.
As the first example, can be obtained by following computing the new brightness value L v (k) of the point '：
Lv (k) '=f*Lv (k),
Wherein, f ∈ (1, Lv (m)/Lv (k)], f occurrence rule of thumb can be set with concrete condition.
As the second example, can be obtained by following computing the new brightness value L v (k) of the point '：
Lv (k) '=(k/m)(m*γ/k)* Lv (m),
Wherein, γ is predetermined gamma value.Here, γ may be less than 2.2 value, rule of thumb can set γ with concrete condition
Occurrence.Preferably, γ can be 1.8.
As the 3rd example, can be obtained by following computing the new brightness value L v (k) of the point '：
Lv (k) '=(k/m)gamma(k)′* Lv (m),
Wherein, gamma (k) ' is the gamma value that grey decision-making is the point that k, brightness value are Lv (k) ', gamma (k) ' meet with
Lower condition：Gamma (k) ' ＜ gamma (k) and Lv (k) '≤Lv (m) is made, wherein, gamma (k) is grey on the gamma curve
Rank value is the gamma value of k point, gamma (k)=lg (Lv (k)/Lv (m))/lg (k/m).
In addition, as an example, each pixel on the liquid crystal panel may include blue subpixels, in the liquid crystal panel
On, whole blue subpixels can be divided into the blue subpixels pair being made up of two blue subpixels, also, each blueness
First blue subpixels of pixel centering are provided higher gray scale value, the second blue subpixels quilt of each blue subpixels centering
Relatively low grey decision-making is provided.So as to preferably eliminate the gray-scale inversion phenomenon of the gamma curve in the case of stravismus, reduce oblique
Colour cast under optionally.
Fig. 4 shows that the display of liquid crystal panel according to an exemplary embodiment of the present invention improves the block diagram of equipment, here, described
Each pixel on liquid crystal panel includes a variety of color sub-pixels.If for example, the liquid crystal panel is RGB liquid crystal panels,
Each pixel on the liquid crystal panel includes red sub-pixel, green sub-pixels and blue subpixels.If the liquid crystal surface
Plate is RGBW liquid crystal panels, then each pixel on the liquid crystal panel includes red sub-pixel, green sub-pixels, blue sub- picture
Element and white sub-pixels.If the liquid crystal panel is RGBY liquid crystal panels, each pixel on the liquid crystal panel includes
Red sub-pixel, green sub-pixels, blue subpixels and yellow sub-pixel.
Include as shown in figure 4, the display of liquid crystal panel according to an exemplary embodiment of the present invention improves equipment：Gamma curve
Acquiring unit 10, brightness enhancing starting point determining unit 20 and brightness value increase unit 30.These units can be by Digital Signal Processing
The common hardware such as device, field programmable gate array processor realizes, also can by the dedicated hardware processors such as special chip come
Realize, can also be realized completely by computer program with software mode, for example, being implemented as installing in a liquid crystal display
Modules in software.
Particularly, at least one that gamma curve acquiring unit 10 is used to be directed in a variety of color sub-pixels is colored
Sub-pixel, obtains the gamma curve in the case of stravismus.
Here, the stravismus situation can be with the vertical direction of liquid crystal panel be in predetermined angular view liquid crystal surface
Plate.The predetermined angular can be unspecified angle in 30 ° to 80 °.It should be understood that the predetermined angular and required liquid crystal panel
Angle of visibility is relevant, and the angle of visibility of required liquid crystal panel is bigger, and the predetermined angular should be bigger.
As an example, the color sub-pixel that gamma curve acquiring unit 10 can be obtained according to being measured in the case of stravismus is each
Brightness value during GTG, obtain the color sub-pixel on grey decision-making and the gamma curve of brightness value.It should be understood that gamma
Curve acquisition unit 10 can also obtain the gamma curve of the color sub-pixel in the case of stravismus by other means.
Brightness enhancing starting point determining unit 20 is used on the gamma curve according to acquisition cutting for the point for corresponding to each grey decision-making
Line slope, determines the brightness enhancing starting point on the gamma curve, wherein, the grey decision-making of the brightness enhancing starting point is j, and
And, the tangent slope of the brightness enhancing starting point is less than the point that grey decision-making on the gamma curve is respectively (j-1) and (j+1)
Tangent slope.
In other words, increase if over grey decision-making, the tangent slope of the point on the gamma curve from large to small after again by
Small to become big, then tangent slope can be become big point by small and be defined as the brightness enhancing by brightness enhancing starting point determining unit 20
Starting point.
Brightness value increase unit 30 is used to increase grey decision-making on the gamma curve and is more than or equal to brightness enhancing starting point
Grey decision-making and less than maximum gray value point brightness value.
In other words, in addition to the maximum point of grey decision-making on the gamma curve, brightness value increase 30 pairs of gammas of unit
Grey decision-making is more than or equal to j institute's a little progress brightness enhancing operation on curve, so that the ash of the gamma curve is mitigated or eliminated
Rank reversal development, so that the gamma curve is overlapped as far as possible with the gamma curve in the case of facing or gap is smaller,
The phenomenons such as the colour cast existed to eliminate in the case of stravismus.
It should be understood that brightness value increase unit 30 can be increased grey decision-making on the gamma curve by various modes and is more than
Strengthen the grey decision-making of starting point equal to the brightness and be less than the brightness value of the point of maximum gray value.It can set grey on the gamma curve
The former brightness value for the point that rank value is k is Lv (k), and it is Lv (k) ' to increase the new brightness value that the brightness value of the point obtained, wherein, k
For the integer more than or equal to j and less than m, m is maximum gray value, and Lv (m) is the original of the point that grey decision-making is m on the gamma curve
Brightness value.Also, it should be noted that Lv (m) is not to be exceeded in new brightness value L v (k) '.
Here, the grey exponent number of pixel is with the different and different of liquid crystal panel, for example, when liquid crystal panel is 8 bit liquid crystal surfaces
During plate, grey exponent number is 256, and GTG can be represented sequentially as 0,1,2 ..., 255.Now, minimum gray value is 0, maximum gray value m
For 255.For example, when liquid crystal panel is 10 bit liquid crystal panel, grey exponent number is 1024, and GTG can be represented sequentially as 0,1,
2……,1023.Now, minimum gray value is 0, and maximum gray value m is 1023.
As the first example, brightness value increase unit 30 can obtain the new brightness value L v of the point by following computing
(k)′：
Lv (k) '=f*Lv (k),
Wherein, f ∈ (1, Lv (m)/Lv (k)], f occurrence rule of thumb can be set with concrete condition.
As the second example, brightness value increase unit 30 can obtain the new brightness value L v of the point by following computing
(k)′：
Lv (k) '=(k/m)(m*γ/k)* Lv (m),
Wherein, γ is predetermined gamma value.Here, γ may be less than 2.2 value, rule of thumb can set γ with concrete condition
Occurrence.Preferably, γ can be 1.8.
As the 3rd example, brightness value increase unit 30 can obtain the new brightness value L v of the point by following computing
(k)′：
Lv (k) '=(k/m)gamma(k)′* Lv (m),
Wherein, gamma (k) ' is the gamma value that grey decision-making is the point that k, brightness value are Lv (k) ', gamma (k) ' meet with
Lower condition：Gamma (k) ' ＜ gamma (k) and Lv (k) '≤Lv (m) is made, wherein, gamma (k) is grey on the gamma curve
Rank value is the gamma value of k point, gamma (k)=lg (Lv (k)/Lv (m))/lg (k/m).
In addition, as an example, each pixel on the liquid crystal panel may include blue subpixels, in the liquid crystal panel
On, whole blue subpixels can be divided into the blue subpixels pair being made up of two blue subpixels, also, each blueness
First blue subpixels of pixel centering are provided higher gray scale value, the second blue subpixels quilt of each blue subpixels centering
Relatively low grey decision-making is provided.So as to preferably eliminate the gray-scale inversion phenomenon of the gamma curve in the case of stravismus, reduce oblique
Colour cast under optionally.
The display ameliorative way and its equipment of liquid crystal panel according to an exemplary embodiment of the present invention, can be by increasing to
The problems such as a kind of few brightness of color sub-pixels in high gray is to improve the colour cast existed when side is seen or looks side ways liquid crystal panel,
So as to effectively increase angle of visibility, demand of the user to the larger visual angle of liquid crystal display is met.
Although having show and described some exemplary embodiments of the present invention, it will be understood by those skilled in the art that
, can be to these in the case where not departing from the principle of the invention that its scope is limited by claim and its equivalent and spirit
Embodiment is modified.
Claims (10)
1. a kind of display ameliorative way of liquid crystal panel, wherein, each pixel on the liquid crystal panel includes a variety of colored sons
Pixel, methods described includes：For at least one color sub-pixel in a variety of color sub-pixels, obtain in stravismus situation
Under gamma curve；Characterized in that, methods described also includes：
According to the tangent slope for the point for corresponding to each grey decision-making on the gamma curve of acquisition, the brightness on the gamma curve is determined
Strengthen starting point, wherein, the brightness strengthens the grey decision-making of starting point for j, also, the tangent slope of brightness enhancing starting point is less than
Grey decision-making is respectively the tangent slope of the point of (j-1) and (j+1) on the gamma curve；
Increase grey decision-making on the gamma curve and be more than or equal to the grey decision-making of brightness enhancing starting point and less than maximum gray value
Point brightness value.
2. according to the method described in claim 1, it is characterised in that in the step of increasing brightness value, if the gamma curve
The former brightness value for the point that upper grey decision-making is k is Lv (k), obtained by following computing the new brightness value L v (k) of the point ', wherein,
K is the integer more than or equal to j and less than m, and m is maximum gray value：
Lv (k) '=f*Lv (k),
Wherein, f ∈ (1, Lv (m)/Lv (k)], Lv (m) is the former brightness value of the point that grey decision-making is m on the gamma curve.
3. according to the method described in claim 1, it is characterised in that in the step of increasing brightness value, if the gamma curve
The former brightness value for the point that upper grey decision-making is k is Lv (k), obtained by following computing the new brightness value L v (k) of the point ', wherein,
K is the integer more than or equal to j and less than m, and m is maximum gray value：
Lv (k) '=(k/m)(m*γ/k)* Lv (m),
Wherein, Lv (m) is the former brightness value of the point that grey decision-making is m on the gamma curve, and γ is predetermined gamma value.
4. according to the method described in claim 1, it is characterised in that in the step of increasing brightness value, if the gamma curve
The former brightness value for the point that upper grey decision-making is k is Lv (k), obtained by following computing the new brightness value L v (k) of the point ', wherein,
K is the integer more than or equal to j and less than m, and m is maximum gray value：
Lv (k) '=(k/m)gamma(k)′* Lv (m),
Wherein, Lv (m) is the former brightness value of the point that grey decision-making is m on the gamma curve, gamma (k) ' be grey decision-making be k, it is bright
Angle value is the gamma value of Lv (k) ' point, and gamma (k) ' meets following condition：gamma(k)′<Gamma (k) and make Lv (k) '≤
Lv (m), wherein, gamma (k) is the gamma value of the point that grey decision-making is k on the gamma curve, gamma (k)=lg (Lv
(k)/Lv(m))/lg(k/m)。
5. method according to claim 3, it is characterised in that γ is the value less than 2.2.
6. a kind of display of liquid crystal panel improves equipment, wherein, each pixel on the liquid crystal panel includes a variety of colored sons
Pixel, it is characterised in that the equipment includes：
Gamma curve acquiring unit, at least one color sub-pixel in a variety of color sub-pixels, is obtained in stravismus
In the case of gamma curve；
Brightness strengthen starting point determining unit, according on the gamma curve of acquisition corresponding to each grey decision-making point tangent slope, really
Brightness enhancing starting point on the fixed gamma curve, wherein, the brightness strengthens the grey decision-making of starting point for j, also, the brightness
The tangent slope of enhancing starting point is less than the tangent slope that grey decision-making on the gamma curve is respectively the point of (j-1) and (j+1)；
Brightness value increases unit, increase grey decision-making on the gamma curve be more than or equal to the brightness strengthen starting point grey decision-making and
Less than the brightness value of the point of maximum gray value.
7. equipment according to claim 6, it is characterised in that set on the gamma curve grey decision-making as the former bright of k point
Angle value is Lv (k), brightness value increase unit obtained by following computing the new brightness value L v (k) of the point ', wherein, k be more than
Integer equal to j and less than m, m is maximum gray value：
Lv (k) '=f*Lv (k),
Wherein, f ∈ (1, Lv (m)/Lv (k)], Lv (m) is the former brightness value of the point that grey decision-making is m on the gamma curve.
8. equipment according to claim 6, it is characterised in that set on the gamma curve grey decision-making as the former bright of k point
Angle value is Lv (k), brightness value increase unit obtained by following computing the new brightness value L v (k) of the point ', wherein, k be more than
Integer equal to j and less than m, m is maximum gray value：
Lv (k) '=(k/m)(m*γ/k)* Lv (m),
Wherein, Lv (m) is the former brightness value of the point that grey decision-making is m on the gamma curve, and γ is predetermined gamma value.
9. equipment according to claim 6, it is characterised in that set on the gamma curve grey decision-making as the former bright of k point
Angle value is Lv (k), brightness value increase unit obtained by following computing the new brightness value L v (k) of the point ', wherein, k be more than
Integer equal to j and less than m, m is maximum gray value：
Lv (k) '=(k/m)gamma(k)′* Lv (m),
Wherein, Lv (m) is the former brightness value of the point that grey decision-making is m on the gamma curve, gamma (k) ' be grey decision-making be k, it is bright
Angle value is the gamma value of Lv (k) ' point, and gamma (k) ' meets following condition：gamma(k)′<Gamma (k) and make Lv (k) '≤
Lv (m), wherein, gamma (k) is the gamma value of the point that grey decision-making is k on the gamma curve, gamma (k)=lg (Lv
(k)/Lv(m))/lg(k/m)。
10. equipment according to claim 8, it is characterised in that γ is the value less than 2.2.
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| US14/780,534 US9734773B2 (en) | 2015-07-14 | 2015-08-11 | Display improvement method and apparatus for liquid crystal display panel |
| PCT/CN2015/086664 WO2017008362A1 (en) | 2015-07-14 | 2015-08-11 | Display improvement method and device thereof for liquid crystal panel |
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| CN105528999B (en) * | 2016-01-15 | 2018-05-08 | 合一智能科技（深圳）有限公司 | The display control method and device of liquid crystal display |
| US10460682B2 (en) * | 2017-05-10 | 2019-10-29 | HKC Corporation Limited | Method for driving display panel pixel with luminance interval signal and display device therefor |
| CN107529049B (en) | 2017-08-28 | 2018-12-28 | 惠科股份有限公司 | Display device images processing method, image processing system and display device |
| CN107818769B (en) * | 2017-10-10 | 2019-07-12 | 惠科股份有限公司 | Displaying panel driving method and display device |
| CN108320716B (en) * | 2018-01-10 | 2019-09-17 | 惠科股份有限公司 | The driving method and device of display panel |
| CN108510952B (en) * | 2018-03-30 | 2019-07-12 | 惠科股份有限公司 | The driving method of liquid crystal display device |
| CN109147689B (en) * | 2018-08-21 | 2020-12-25 | 惠州市华星光电技术有限公司 | Liquid crystal display and gamma curve adjusting method thereof |
| CN109581772A (en) * | 2018-12-24 | 2019-04-05 | 惠科股份有限公司 | Display panel and display device |
| CN112382247A (en) * | 2020-11-05 | 2021-02-19 | 深圳市华星光电半导体显示技术有限公司 | Display device and gamma curve adjusting method thereof |
| CN112331159B (en) * | 2020-11-20 | 2022-03-11 | 深圳市巨烽显示科技有限公司 | Fast matching correction device and method for display |
Family Cites Families (21)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4802350B2 (en) * | 1998-03-12 | 2011-10-26 | ソニー株式会社 | Display device |
| KR100841616B1 (en) * | 2001-12-31 | 2008-06-27 | 엘지디스플레이 주식회사 | Driving apparatus and its driving method of liquid crystal panel |
| JP4379399B2 (en) * | 2005-09-06 | 2009-12-09 | セイコーエプソン株式会社 | Gamma curve generation method and apparatus |
| WO2007052381A1 (en) | 2005-10-31 | 2007-05-10 | Sharp Kabushiki Kaisha | Color liquid crystal display and gamma correction method for the same |
| TWI354492B (en) * | 2007-03-07 | 2011-12-11 | Marketech Int Corp | Image processing apparatus |
| JP5012327B2 (en) * | 2007-08-29 | 2012-08-29 | ソニー株式会社 | Liquid crystal display device and driving method of liquid crystal display device |
| US8132916B2 (en) * | 2008-12-12 | 2012-03-13 | Carl Zeiss Meditec, Inc. | High precision contrast ratio display for visual stimulus |
| US8508449B2 (en) | 2008-12-18 | 2013-08-13 | Sharp Corporation | Adaptive image processing method and apparatus for reduced colour shift in LCDs |
| JP5211024B2 (en) * | 2009-12-09 | 2013-06-12 | 株式会社日立製作所 | Image display device |
| CN102258556A (en) | 2010-05-29 | 2011-11-30 | 宫怀恒 | Oral liquid for preventing epidemic meningitis |
| US8952978B2 (en) | 2010-09-28 | 2015-02-10 | Sony Corporation | Display device, viewing angle control method, computer program storage device with viewing angle control program, and mobile terminal |
| JP2013106151A (en) * | 2011-11-11 | 2013-05-30 | Canon Inc | Image processing apparatus and image processing method |
| EP2669882B1 (en) * | 2012-05-31 | 2019-10-09 | Samsung Display Co., Ltd. | Display device and driving method thereof |
| WO2014021132A1 (en) | 2012-07-30 | 2014-02-06 | シャープ株式会社 | Viewing angle characteristic improving method in liquid crystal display device, and liquid crystal display device |
| CN103106884B (en) * | 2013-02-05 | 2015-11-25 | 深圳市华星光电技术有限公司 | A kind of method and system improving the visual angle colour of skin colour cast of liquid crystal display |
| TWI506609B (en) * | 2013-02-08 | 2015-11-01 | Hung Ta Liu | Method for adjusting gamma curve and gamma voltage generator and display control system therof |
| KR102207464B1 (en) * | 2013-12-30 | 2021-01-27 | 삼성디스플레이 주식회사 | Display apparatus and driving method thereof |
| CN104167194B (en) | 2014-08-18 | 2017-04-26 | 深圳市华星光电技术有限公司 | Liquid crystal display panel gray-scale value setting method and liquid crystal display |
| CN104361870B (en) * | 2014-11-05 | 2017-07-28 | 深圳市华星光电技术有限公司 | Liquid crystal panel and its pixel cell establishing method |
| US9961408B2 (en) * | 2014-12-17 | 2018-05-01 | Echostar Technologies L.L.C. | Apparatus, systems and methods for video output brightness adjustment |
| CN104574337B (en) * | 2015-01-21 | 2016-02-24 | 山东科技大学 | Based on the image enchancing method that bilateral gamma correction and multi-scale image merge |
-
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